Remove xfa/src/fwl/src and move code up a level.

xfa/src/fwl/src/lightwidget/caret.cpp

-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "xfa/include/fwl/lightwidget/caret.h"
-
-#include <memory>
-
-#include "xfa/include/fwl/basewidget/fwl_caret.h"
-#include "xfa/include/fwl/lightwidget/edit.h"
-#include "xfa/src/fwl/src/core/fwl_targetimp.h"
-
-CFWL_Caret* CFWL_Caret::Create() {
-  return new CFWL_Caret;
-}
-FWL_ERR CFWL_Caret::Initialize(const CFWL_WidgetProperties* pProperties) {
-  if (m_pIface)
-    return FWL_ERR_Indefinite;
-  if (pProperties) {
-    *m_pProperties = *pProperties;
-  }
-  std::unique_ptr<IFWL_Caret> pCaret(IFWL_Caret::Create(
-      m_pProperties->MakeWidgetImpProperties(nullptr), nullptr));
-  FWL_ERR ret = pCaret->Initialize();
-  if (ret != FWL_ERR_Succeeded) {
-    return ret;
-  }
-  m_pIface = pCaret.release();
-  CFWL_Widget::Initialize();
-  return FWL_ERR_Succeeded;
-}
-FWL_ERR CFWL_Caret::ShowCaret(FX_BOOL bFlag) {
-  return static_cast<IFWL_Caret*>(m_pIface)->ShowCaret(bFlag);
-}
-FWL_ERR CFWL_Caret::GetFrequency(FX_DWORD& elapse) {
-  return static_cast<IFWL_Caret*>(m_pIface)->GetFrequency(elapse);
-}
-FWL_ERR CFWL_Caret::SetFrequency(FX_DWORD elapse) {
-  return static_cast<IFWL_Caret*>(m_pIface)->SetFrequency(elapse);
-}
-FWL_ERR CFWL_Caret::SetColor(CFX_Color crFill) {
-  return static_cast<IFWL_Caret*>(m_pIface)->SetColor(crFill);
-}
-CFWL_Caret::CFWL_Caret() {}
-CFWL_Caret::~CFWL_Caret() {}